| 摘要 |
<p>A withdrawing and releasing adjusting mechanism comprises a tube (1) and a rotary shaft (3). The rotary shaft (3) is penetratingly arranged in the tube (1), and a button (2) is arranged at an end of the rotary shaft (3). Left-handed threads (4) and right-handed threads (5) which are separated from each other are axially distributed on the rotary shaft (3), swivel nuts (6) are respectively in screw connection with the left-handed threads (4) and the right-handed threads (5), the swivel nut on the left-handed threads and the swivel nut on the right-handed threads are respectively connected with end parts (8) of two traction ropes (7) extending into the tube (1), the rotary shaft (3) and the tube (1) are axially limited by an axial limiting component (9), the traction ropes (7) are penetratingly disposed in rope sleeves (13), and an end of the rope sleeve (13) can be inserted into a traction rope penetrating hole on the end surface of the tube. With the mechanism, one traction rope can ascend while the other traction rope descends via one action of rotation, and the mechanism is reasonable in arrangement and convenient to operate.</p> |
